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Finding the Fourth Proportional to 361,745.76, 542,696.40 and 121,883.50

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Solution

The fourth proportional to 361,745.76, 542,696.40 and 121,883.50 is: 182,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,745.76 : 542,696.40 = 121,883.50 : x
  2. Step 2: Convert to fraction form
    361,745.76/542,696.40 = 121,883.50/x
  3. Step 3: Cross multiply
    361,745.76x = 542,696.40 × 121,883.50
  4. Step 4: Simplify right side
    361,745.76x = 66,145,736,669.40
  5. Step 5: Solve for x
    x = 66,145,736,669.40/361,745.76
  6. Step 6: Final answer
    x = 182,851.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.